We found 21 dictionaries that define the word trapezoidal:

General (16 matching dictionaries)

1. trapezoidal: Merriam-Webster
2. trapezoidal: Oxford Learner's Dictionaries
3. trapezoidal: Collins English Dictionary
4. trapezoidal: Vocabulary.com
5. trapezoidal: Wordnik
6. trapezoidal: Wiktionary
7. trapezoidal: Dictionary.com
8. Trapezoidal: Wikipedia, the Free Encyclopedia
9. Trapezoidal: Online Plain Text English Dictionary
10. trapezoidal: Webster's Revised Unabridged, 1913 Edition
11. trapezoidal: Rhymezone
12. Trapezoidal: AllWords.com Multi-Lingual Dictionary
13. trapezoidal: Webster's 1828 Dictionary
14. trapezoidal: FreeDictionary.org
15. trapezoidal: Mnemonic Dictionary
16. Trapezoidal: TheFreeDictionary.com

Computing (1 matching dictionary)

17. trapezoidal: Encyclopedia

Medicine (3 matching dictionaries)

18. trapezoidal: Merriam-Webster Medical Dictionary
19. online medical dictionary (No longer online)
20. trapezoidal: Medical dictionary

Slang (1 matching dictionary)

21. trapezoidal: Urban Dictionary

(Note: See trapezoid as well.)

Definitions from Wiktionary (trapezoidal) ▸ adjective:  In the shape of a trapezoid, or having some faces which have one pair of parallel sides. Similar: trapezian, trapezate, trapezial, trapeziform, subtrapezoidal, trirhomboidal, subtrapezoid, parallelogrammatic, isosceles, rectangular, more... Opposite: rectangular, parallel, symmetrical, even, uniform Types: isosceles, scalene, equilateral, right, obtuse, trapezoid, more... Phrases: trapezoidal rule, trapezoidal arch, Trapezoidal thread form, Trapezoidal wing, Trapezoidal distribution, more... Adjectives: more, pronotum, rectangular, first, triangular, female, modified, funicular, aperture, genital, upper ▸ Words similar to trapezoidal ▸ Usage examples for trapezoidal ▸ Idioms related to trapezoidal ▸ Wikipedia articles (New!) ▸ Popular nouns described by trapezoidal ▸ Words that often appear near trapezoidal ▸ Rhymes of trapezoidal ▸ Invented words related to trapezoidal